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- W2108628829 abstract "Background: The reliability and validity of the SensorMedics Vmax ST was tested. Methods: Thirty subjects (age = 24.5 ± 4.0 years, height = 174.8 ± 9.8 cm, weight = 70.3 ± 12.6 kg) performed treadmill exercise on three occasions, twice using the Vmax ST and once using the SensorMedics 2900 system. Oxygen consumption (VO 2 ; L/min) and heart rate (HR; beats/min) were measured continuously during three, 6- minute stages: 80 m/min, 0% grade; 94 m/min, 5% grade; and 160 m/min, 0% grade, and VO 2max . Results: Reliability was high, and measurement error was low for VO 2 (Rxx range = 0.97 - 0.99, CI = 0.94 - 1.00, SEM = 0.03 - 0.08 L/min) and HR (Rxx = 0.94 - 0.99, CI = 0.88 - 1.00, SEM = 1.8 - 3.2 beats/min). Validity was high for VO 2 (Rxy range = 0.92 - 0.98, CI = 0.84 - 0.99, SEE = 0.08 - 0.21 L/min) and HR (Rxy = 0.97 - 0.99, CI = 0.94 - 1.00, SEE = 0.9 - 1.8 beats/min). Mean differences in VO 2 between Vmax ST and 2900 were small yet significant ( P < 0.001). Conclusions: The Vmax ST demonstrated excellent reliability and validity for measuring VO 2 and HR over several exercise intensities. Small overestimates in VO 2 by the Vmax ST are countered by low measurement error." @default.
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- W2108628829 date "2004-10-01" @default.
- W2108628829 modified "2023-09-27" @default.
- W2108628829 title "Reliability and Validity of the VmaxST Portable Metabolic Analyzer" @default.
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- W2108628829 doi "https://doi.org/10.1123/jpah.1.4.413" @default.
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